New Brunswick Water Bath
Shaker C-76 Classic
Operating Manual
M1248-0051
Revision G
2
COPYRIGHT:
Copyright © 2013 Eppendorf AG, Hamburg. No part of this publication may be reproduced
without the prior permission of the copyright owner.
The company reserves the right to change information in this document without not ice. Updat es
to information in this document r eflect our commitment to continuing product development and
improvement.
TRADEMARKS:
Eppendorf® is a registered trademark, and New Brunswick™ and the New Brunswick
Logo™ are trademarks of Eppendorf AG, Hamburg, Germany.
Trademarks are not m ar ked in all cases with ™ or ® in this manual.
Eppendorf has attempted t o ident ify the ownership of all trademarks fr om public records. Any
omissions or errors are unintentional.
February 3, 2013
Revision G
M1248-0051
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
3
WARNING!
This equipment must be operated as described in this manual.
If operational guidelines are not followed, equipment damage
and personal injury can occur. Please read entire Operating
manual before attempting to use this unit.
New Brunswick Operating manual
4
TABLE OF CONTENTS
1 OVERVIEW ....................................................................................................................................................... 6
1.1 SPECIFICATIONS ............................................................................................................................................... 7
2 INSPECTION, VERIFICA TION & UNPACKING OF EQUIPMENT ........................................................ 9
2.1 INSPECTION OF BOXES ..................................................................................................................................... 9
2.2 PACKING LIST VERIFICATION ........................................................................................................................... 9
2.3 UNPACKING OF EQUIPMENT ............................................................................................................................. 9
3 PREPARING THE LOCATION .................................................................................................................... 10
3.1 PHYSICAL LOCATION ...................................................................................................................................... 10
3.2 ENVIRONMENT ............................................................................................................................................... 10
3.3 DRAIN VALVE CONNECTION .......................................................................................................................... 11
3.4 COOLING COIL CONNECTIONS ........................................................................................................................ 11
4 FEATURES ...................................................................................................................................................... 14
4.1 KEYPAD ......................................................................................................................................................... 14
4.1.1 LED Display ........................................................................................................................................ 14
4.1.2 User Interface Keys ............................................................................................................................. 14
4.1.3 Status Indicators .................................................................................................................................. 15
4.1.4 Function Indicators ............................................................................................................................. 15
4.2 PLATFORM ASSEMBLIES ................................................................................................................................. 16
4.3 BAFFLES ......................................................................................................................................................... 16
4.4 OPTIONAL COOLING COIL ............................................................................................................................... 17
4.5 OPTIONAL GABLE COVERS ............................................................................................................................. 17
5 GETTING STARTED ..................................................................................................................................... 18
5.1 ELECTRICAL CONNECTIONS ........................................................................................................................... 18
5.2 INSTALLATION OF DRIVE ARMS AND PLATFORM ............................................................................................ 19
5.3 INSTALLING FLASK CLAMPS ........................................................................................................................... 21
5.4 FILLING THE BATH ......................................................................................................................................... 22
6 OPERATION ................................................................................................................................................... 24
6.1 STARTING THE C-76 ....................................................................................................................................... 24
6.2 CONTINUOUS (UNLIMITED) RUN .................................................................................................................... 24
6.3 CHECKING ANY SETPOINT .............................................................................................................................. 24
6.4 TIMED FUNCTIONS ......................................................................................................................................... 25
6.4.1 Setting the Timer .................................................................................................................................. 25
6.4.2 Cancelling the Timer ........................................................................................................................... 25
6.5 ALARM FUNCTIONS ........................................................................................................................................ 26
6.6 TEMPERATURE SETPOINT ............................................................................................................................... 26
6.7 OPTIONAL COOLING COIL OPERATION ........................................................................................................... 26
6.8 TOTAL RUNNING TIME ................................................................................................................................... 26
6.9 MAINT INDICATOR ......................................................................................................................................... 27
6.10 AUTOMATIC RESTART ............................................................................................................................... 27
7 PREVENTIVE MAINTENANCE .................................................................................................................. 28
7.1 CLEANING SURFACES ..................................................................................................................................... 28
7.2 FUSE REPLACEMENT ...................................................................................................................................... 28
7.3 BELT REPLACEMENT ...................................................................................................................................... 30
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
8 TROUBLESHOOTING ................................................................................................................................... 34
9 REPLACEMENT PAR TS & ACCESSORY INFORMATION................................................................. 35
9.1 REPLACEMENT PARTS .................................................................................................................................... 35
9.2 ACCESSORIES ................................................................................................................................................. 35
9.2.1 Half-Size Platforms .............................................................................................................................. 35
9.2.2 Test Tube Racks ................................................................................................................................... 36
9.2.3 Dedicated Platforms ............................................................................................................................ 36
9.2.4 Universal Platform Clamps ................................................................................................................. 36
10 DRAWINGS ..................................................................................................................................................... 37
11 INDEX ............................................................................................................................................................... 39
5
New Brunswick Operating manual
6
1
1
The C-76 Classic Water Bath Shaker is a shaker utilizing an eccentric counterbalanced drive to
provide horizontal plane rotary motion in a 1/2” (1.3 cm) circular orbit. A Proportional/Integral
(PI) Microprocessor controller with instantaneous digital feedback controls the speed over a
range of 50-300 RPM. It also provides temperature control over a range of 7°C above ambient to
80°C. For lower temperatures, an optional water bath cooling coil is available.
The shaker may be operated either continuously or in a timed mode via a programmable timer for
shaking periods of 0.1 hour to 99.9 hours.
In addition, the C-76 is equipped with visual alarms that alert the user to the following
conditions:
• The end of a timed run
• Deviations in shaking speed
• Deviations in temperature
• Power failure
A wide variety of platforms can be used with the C-76. Dedicated platforms are available for a
variety of flask sizes. Universal platforms, utility trays, utility carriers and test tube racks are
also available.
O
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O
W
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
1.1 Specifications
C-76 Classic Water Bath Shaker
Speed
• Stroke
50-300 rpm
Temperature
Heaters
7°C above ambient (or cooler temperatures with
Ambient Operating
Environment
5 - 35°C, 20 to 90% relative humidity, non-condensing
Visible warning when speed deviates more than 5 rpm
when timer has expired.
0.1 hour to 99.9 hours.
Can be deactivated for continuous operation.
Automatic restart af t er power is restored.
during power interruption.
Electrical Requirements
110/120V AC 50/60 Hz, 1320 VA
220/240V AC 50/60 Hz, 1320 VA
Platform
12 inches X 16.5 inches (31 X 42 cm)
Stainless Steel
Overall Dimensions
21.4 inches W X 26.9 inches D X 18.5 inches H
(54 cm W X 68 cm D X 47 cm H).
Weight
115 lbs (52 kg) Net
145 lbs (66 kg) Gross
7
• Control Accuracy
• Indication
Control
Indication
Alarms
Timer
Automatic Restart
± 2 rpm
3 Digit LED in 1 rpm increments
½ inch (1.3 cm)
optional cooling coil) to 80°C*
± 0.25°C
Digital LED display in 0.1°C increments
Low-watt density resistance type
and temperature more than 1°C from setpoints, and
Shuts off agitat ion at end of period.
Setpoints and operating status are r et ained in mem ory
* Stainless Steel Gable Cover Required for temperatures over 60°C.
New Brunswick Operating manual
8
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
2
WARNING!
2
9
N
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,
,
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2.1 Inspection of Boxes
After you receive your order from Eppendorf, inspect the boxes carefully for any
damage that may have occurred during shipping. Report any damage immediately to
the carrier and to your local Eppendorf Sales Order Department.
2.2 Packing List Verification
Verify against your packing list that you have received the correct materials.
2.3 Unpacking of Equipment
Save all packing materials and the Operating manual. If any part of your order was
damaged during shipping, is missing pieces, or fails to operate properly, please fill out
the Customer Satisfaction Form 6300 and return it by fax.
U
NNPPAACCKKIINNGG OOFF
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E
QQUUIIPPMMEENNT
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T
New Brunswick Operating manual
The shaker is heavy. Two or more people are required to lift
the unit.
10
3.1 Physical Location
It is essential that the instrument be situated in an area where there is sufficient space
for the shaker and platform to clear walls and potential obstructions during operation.
The surface on which the unit is placed must be smooth, level, and able to support the
shaker under full load operating conditions.
3.2 Environment
The shaker is designed to operate optimally in the following ambient conditions:
• 5 - 35°C
• 20 to 90% Relative Humidity, non-condensing
3
3
P
RREEPPAARRIINNGG TTHHEE
P
L
OOCCAATTIIOON
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M1248-0051 C-76 Classic Water Bath Shaker Operating manual
DRAIN
VALVE
ON/OFF
SWITCH
3.3 Drain Valve Connection
The unit should be placed in close proximity to an open drain.
It is recommended that a 3/8” ID hose be connected to the DRAIN VALVE for draining
the bath. The DRAIN VALVE is located near the rear of the unit, on the side opposite
the ON/OFF SWITCH (see Figure 1 below).
11
Figure 1: Top View
3.4 Cooling Coil Connections
If your water bath is equipped with an optional COOLING COIL, prepare the coil for
operation:
1. Remove the rear panel of the WATER BATH ASSEMBLY from the unit (see Figure
2).
New Brunswick Operating manual
12
GROMMETS
Figure 2: Water Bath Assembly Rear Panel
2. Knock out the two plugs on the center of the two grommets on the rear panel (see
Figure 3).
Figure 3: Water Tank Rear Panel Detail
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
13
3. Slip two lengths of 3/8 inch (9.5 mm) ID hose with hose clamps over the coil
ends. The hoses should be long enough to suit water or coolant supply and return
(drain) length requirements. Be careful to note or label the operation of each
hose.
4. Allow 1/8 inch (3 mm) to 3/16 inch (5 mm) of hose to extend beyond the hose
clamps and secure in place. Ensure that the clamps do not damage the hose.
5. Feed the two lengths of hose through the grommets on the rear panel and reattach
the rear panel to the unit.
6. Connect and secure the two remaining hose ends to their appropriate connections.
One line must go to an open drain or return to a coolant supply, and the other line
must be adapted to a water or water supply. If tap water will be used as a coolant,
the supply hose should be attached to a control valve to minimize water use.
New Brunswick Operating manual
14
s
t
STATUS
FUNCTION
LED DISPLAY
USER INTERFACE KEYS
4.1 Keypad
INDICATORS
MAINT
SET
TIME
MUTE
START
STOP
4
4
RPM
HRS
ºC
SELECT
F
EEAATTUURREES
F
INDICATORS
I
S
4.1.1 LED Display
4.1.2 User Interface Keys
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
The digital display on the control panel is a-three digit
normal shaker operation the display will indicate:
• Shaker status (on/off)
• Shaking speed
• Chamber temperature
• Setpoints
• Hours remaining (timed run)
• START/STOP This key is used to start or stop the shaker. It will
also activate or stop the timer when a timed run is
desired.
LED DISPLAY. During
• SELECT This key is used to change the displayed parameter.
σ
τ
°
•
(UP),
(DOWN) These keys are used to increase or descrease
4.1.3 Status Indicators
Four status indicator lights are located to the left of the LED DISPLAY:
• MAINT Remains lit after 10,000 hours of use. Accumulated
running time is internally monitored and may be
displayed as a guideline.
• SET Indicates that the shaker is in the SET MODE and
setpoints are being displayed and can be altered.
TIME Indicates that the timer is in operation. The shaker
•
can be programmed to run for a preset time from 0.1
hr. to 99.9 hrs. The timer can be disengaged
without stopping an ongoing run.
•
MUTE Not applicable
15
the setpoint of a displayed parameter. They also
allow the user to enter the SET MODE for setpoint
changes.
4.1.4 Function Indicators
Four function indicator lights are located to the right of the LED DISPLAY.
They indicate the current parameter being displayed:
• RPM shaking speed (revolutions per minute)
• HOURS time remaining
•
C temperature
• * not applicable
New Brunswick Operating manual
16
REAR
FRONT
4.2 Platform Assemblies
The C-76 can be used with a wide variety of New Brunswick 12-inch X 16.5-inch (31
X 42 cm) platforms, which will accept a variety of clamps for flasks, test tubes, etc.
A platform, which is a separate item, is required for operation. Refer to the
Replacement Parts and Accessory Information section of this manual for details.
4.3 Baffles
The C-76 Water Bath is equipped with both front and rear BAFFLES (see Figure 4
below) to protect laboratory equipment and personnel from oversplashing. The
BAFFLES are interchangeable. They clip on and off for easy installation and removal.
BAFFLE
Figure 4: Baffles (top view)
BAFFLE
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
4.4 Optional Cooling Coil
The optional COOLING COIL enables the shaker to maintain accurate temperature
control within 7°C of coolant temperature to 80°C.
4.5 Optional Gable Covers
The optional GABLE COVERS, available in PLEXIGLAS and STAINLESS STEEL, are
designed to maintain culture sterility by allowing condensation from the bath to run
down the sides of the cover, and not drip directly on the contents of the bath. The
PLEXIGLAS GABLE COVER is recommended for bath temperatures up to 60°C; the
STAINLESS STEEL GABLE COVER is required for temperatures over 60°C.
17
New Brunswick Operating manual
18
POWER
FUSE
HOLDER
CAUTION!
5.1 Electrical Connections
Before making electrical connections, verify that the power source
voltage matches the voltage on the electrical specification plate
and the on/off switch is on the OFF position. The electrical
Connect the POWER CORD to the POWER CONNECTOR (see Figure 5 below) and
plug it into a suitable, grounded receptacle.
specification plate is located on the side panel of the unit near the
on/off switch. Also verify that the power cord plug is compatible
with your outlet.
5
5
Figure 5: Shaker Rear Panel
G
EETTTTIINNGG
G
S
TTAARRTTEED
S
D
CONNECTOR
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
5.2 Installation of Drive Arms and Platform
LOCKWASHERS (4)
SUSPENSION
ARM
DRIVE ARMS (4)
P/N M1248-0730
KNOBS (4)
The SUSPENSION ARM KIT included in your shipment allows you to install a platform
in the bath. The kit includes a set of four each DRIVE ARMS, KNOBS,
LOCKWASHERS and PLATFORM SCREWS. The DRIVE ARMS attach to the
SUSPENSION ARM and are secured by a KNOB and LOCKWASHER (see Figure 6
below). The platform rests on the DRIVE A RMS inside the bath and is secured by the
PLATFORM SCREWS. The DRIVE ARMS and PLATFORM can be installed separately
or as an assembly.
Figure 6: Drive Arm Installation
19
P/N H-967
P/N W2217-3120
When installing the DRIVE ARMS and/or PLATFORM, ensure that each DRIVE ARM is
perpendicular to the SUSPENSION ARM. The DRIVE ARMS can be adjusted or
removed by loosening the KNOBS that hold the arms in place. Ensure that each
KNOB, LOCKWASHER and DRIVE ARM is secured before installing a PLATFORM.
Place a PLATFORM on top of the DRIVE ARMS and align the holes in the PLATFORM
with the platform screw locations (see Figure 7) on the DRIVE ARMS. Install the
PLATFORM SCREWS and secure the PLATFORM in place as shown in Figure 8.
New Brunswick Operating manual
20
DRIVE ARMS
Figure 7: Platform Screw Locations
(4)
Figure 8: Platform Installa ti on
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
NOTE:
UPPER GIRDLE
LOWER
PLATFORM
CLAMP
CLAMP BODY
For ease and convenience, an addi tional Suspension Arm Kit (M1248-
0730) is available. A platform can also be installed by securing it to the
drive arms, and then securing the entire assembly to the unit. Verify
that the arms are secured in place before operating the unit.
5.3 Installing Flask Clamps
Flask clamps purchased for use with universal platforms (see Section 9.2) require
installation. Clamps are installed by securing the base of the clamp to the platform with
the correct type and number of screws. All clamps are shipped complete with hardware.
Clamps for 2-, 2.8- and 4-liter flasks are shipped with an additional girdle to keep the
flasks in place. The girdle is an assembly of springs and sections of rubber tubing. One
girdle is already in place on the clamp, the other is packed separately. To install these
double girdle clamps:
1. Place the clamp on the platform, aligning its mounting holes with holes on the
platform. Secure the clamp in place using the flat Phillips head screws provided
(#S2116-3051, 10-24 x 5/16-inch). Use Figure 9b to help you identify the proper
screws, as three different types of screws are shipped with the clamps.
Figure 9a: Double Girdle Clamp Installation
MOUNTING
HOLES (5)
21
WITH GIRDLE
TUBES
GIRDLE WITH
GIRDLE TUBES
(LEGS AND BASE)
2. With the first girdle in place, as delivered, on the upper part of the clamp body (see
Figure 9a above), insert an empty flask into the clamp.
New Brunswick Operating manual
22
Description
Part Number
Qty.
Application
10-24 x 5/16 (7.9 mm)
S2116-3051
1
5/16" (7.9 mm) thick
3. After making sure the sections of tubing are located between the clamp legs, roll the
first girdle down the legs of the clamp as far as it can go. The tubing sections will rest
against the platform, and the springs will be under the clamp base.
4. Place the second girdle around the upper portion of clamp body (just as the first girdle
was initially). Make sure that its spring sections rest against the clamp legs, while its
rubber tubing sections sit against the flask, in between the clamp legs.
NOTE:
The upper girdle secures the fl ask within the clamp, a nd the bottom girdle
keeps the flask from spinning.
New Brunswick flask clamps are used on a variety of shaker platforms. Flat head screws
of different lengths and thread pitch are used to secure the clamp. To identify the proper
screw for your shaker application by reference to the head style, consult Table 1 below,
find the proper screws and set the others aside:
Figure 9b: Clamp Fastener
Table 1: Clamp Hardware Application Chart
No matter what size the clamp, use these screws to f ast en t hem t o your platf or m:
flat Phillips (+) head
screw
5.4 Filling the Bath
Before filling the bath, ensure that the DRAIN VALVE is in the closed position.
Using a container or hose, fill the bath with water.
aluminum, phenolic and
stainless steel platforms.
NOTE:
To minimize the development of rust inside the water bath:
• If you are using tap water in the bath, make sure the water has a low
iron content.
• If you are using distilled water, mix it with a small amount of tap water
and/or add dissolved salts. Any ultra-pure (distilled, de-ionized or
reverse osmosis) water tends to leach the iron from the stainless steel,
encouraging oxidation.
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
23
The minimum water level required for operation is ½ inch (12.7 mm) above the top of the
PLATFORM. For most applications, the maximum allowable level of water in the bath is 2
inches (5 cm) above the top of the PLATFORM. The maximum level is measured with
flasks in the bath.
New Brunswick Operating manual
24
τ
τ
τ
6
6
6.1 Starting the C-76
To initially start the shaker, turn the ON/OFF SWITCH on the side of shaker to the ON
position. If the Shaker begins to operate, the LED DISPLAY will track the speed as it
accelerates to the last entered setpoint. The shaking action may be stopped or started by
pressing the START/STOP KEY.
6.2 Continuous (Unlimited) Run
1. Press SELECT until the RPM INDICATOR is illuminated.
2. If the display indicates that the shaker is OFF, press the START/STOP KEY.
3. Press either σ or
4. Set the speed by using the σ or
the σ or
KEY will cause the setting to change more rapidly.
KEY to enter SET MODE (the SET INDICATOR will illuminate).
KEY until the desired setpoint is displayed. Holding
O
PPEERRAATTIIOON
O
N
NOTE:
The setpoint may be changed during a run without stoppi ng the shaker by
following steps 2-4 above. During speed changes, a visual alarm (flashing
RPM INDICATOR) will flash until the speed returns to within 5 rpm of the
setpoint.
6.3 Checking Any Setpoint
1. Press SELECT until the desired indicator is illuminated.
2. Press either σ or τ KEY to enter the SET MODE and display the current setpoint.
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
τ
τ
CAUTION!
Holding the σ or τ key for more than 0.5 seconds will cause
the speed setpoint to change. Should this occur, resetting
will be necessary.
6.4 Timed Functions
The shaker can be programmed to stop automatically after a preset time period of 0.1
hour to 99.9 hours. There must be power to the shaker in order to set the timer; however,
a timed run can be initiated while the unit is either shaking or stopped.
6.4.1 Setting the Timer
To set the time:
1. Press the SELECT KEY until the HRS INDICATOR is illuminated.
2. Press either σ or
hours.
3. While the SET INDICATOR is illuminated, press the START/STOP KEY to
program the time (and start the run). The TIME INDICATOR will light and
remain on for the duration of the run. At the end of the timed run, the display
will read
1. To disable the alarm (flashing
change to any other function.
KEY to enter the SET MODE and set between 0.1 - 99.9
OFF, and the TIME INDICATOR will flash.
TIME INDICATOR), press the SELECT KEY and
25
6.4.2 Cancelling the Timer
New Brunswick Operating manual
To cancel the timer without stopping the shaker:
1. Press the SELECT KEY until the HRS INDICATOR is illuminated.
2. Press either σ or
KEY to enter the SET MODE and set between 0.1 - 99.9
hours, then immediately press the START/STOP KEY. The TIME INDICATOR
will cease to flash and the display will read OFF.
26
τ
°
τ
°
6.5 Alarm Functions
The shaker has a visible alarm (flashing TIME INDICATOR) that is activated (a) at the end
of a timed run, or (b) if the temperature is 1ºC or more from the setpoint, or if the speed is
5 RPM or more from the setpoint.
It may be deactivated in the following way:
1. Press the SELECT KEY until the HRS INDICATOR is illuminated.
2. Simultaneously press the σ and
3. While the SET and MAINT INDICATORS are flashing, press the START/STOP KEY. The
MUTE INDICATOR will light to advise that the audible alarm has been deactivated.
To reactivate the alarm, repeat steps 1-3. The MUTE INDICATOR will be extinguished
when the alarm has been reactivated.
6.6 Temperature Setpoint
KEYS. The SET and MAINT INDICATORS will flash.
Press the SELECT KEY until the function
be set from 7°C above the current ambient temperature to a maximum of 80.0°C.
Increasing or decreasing the setpoint is accomplished with the σ or
During operation, if the temperature of the chamber is more than 1.0°C higher or lower
than the temperature setpoint, a visual alarm is triggered. This alarm consists of a
flashing
C INDICATOR. The alarm will automatically deactivate as the unit achieves the
setpoint.
6.7 Optional Cooling Coil Operation
To operate the cooling coil (if it is present), turn on the cooling coil coolant supply. Set
the bath control at the desired temperature (below ambient). The bath heater will
maintain accurate temperature control within 7°C above the coolant temperature.
6.8 Total Running Time
The control modules of the C-76 Shaker totalize the time the shaker has been
hours of usage. To display the accumulated running time:
1. Press SELECT until the HRS INDICATOR is illuminated.
2. Simultaneously press the σ and τ KEYS.
C INDICATOR illuminates. The temperature can
KEY.
ON to track
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
3. The SET and MAINT INDICATORS will flash and the accumulated running time will be
displayed in hundreds of hours (i.e., “02” equals 200 hours; “102” equals 10,200
hours). This display will continue for 10 seconds and then default to the previous
mode readout.
6.9 Maint Indicator
After 10,000 hours of operation, the MAINT INDICATOR will illuminate. Preventive
maintenance is recommended at this point.
To deactivate the MAINT INDICATOR, follow these steps:
1. Press SELECT until the HRS INDICATOR is illuminated.
2. Simultaneously press the σ and τ KEYS.
3. Press the τ KEY.
27
6.10 Automatic Restart
In the event of a power failure, the C-76 is equipped with an automatic restart function.
If the shaker was in operation at the time of the power interruption, it will begin to
operate at its last entered setpoint when the power is restored. The
flash, indicating that a power failure has occurred. Press any key to stop the flashing.
LED DISPLAY will
New Brunswick Operating manual
28
WARNING!
WARNING!
7
7
Always turn off the shaker and disconnect the power cord from the
power supply before performing maintenance on the unit.
7.1 Cleaning Surfaces
Clean the exterior surfaces of the unit with a damp cloth. You may also use any standard
household or laboratory cleaner. Do not use abrasive or corrosive compounds, as they
may damage the unit and void the warranty.
The water bath should be drained and flushed on a weekly basis to prevent mineral
deposits from building up on the inside surface of the bath. Mild household or laboratory
detergent can be used in the bath. A plastic scouring pad such as “Scotchbrite” may be
used to remove any buildups or deposits. This can also be used to remove scratches from
the stainless steel surfaces of the bath.
P
RREEVVEENNTTIIVVEE
P
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AAIINNTTEENNAANNCCE
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7.2 Fuse Replacement
NOTE:
To minimize the development of rust inside the water bath, do not use steel
wool or other abrasive pads to clean the stainless steel bath.
The electrical fuse of the unit is housed in the fuse holder on the rear panel of the unit
above the POWER CORD CONNECTOR.
To check or replace the fuse, follow these steps:
Always turn off the shaker and disconnect the power cord from the
power supply before changing the fuse.
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
29
POWER
FUSE
HOLDER
Figure 5: Shaker Rear Panel
CONNECTOR
1. Insert a small flat-bladed screwdriver into the fuse holder groove and turn counter-
clockwise until it disengages. The fuse holder will spring free.
Figure 10: Fuse Holder Detail
2. Check the fuse and replace it if necessary.
New Brunswick Operating manual
30
WARNING!
WARNING!
7.3 Belt Replacement
To replace the drive belt of the shaker:
The following procedure should only be performed by an NBSauthorized service technician.
Always turn off the shaker and disconnect the power cord from the
power supply before changing the belt.
1. Allow sufficient time for the water bath to cool, then open the DRAIN VALVE and
allow the bath to drain. Close the DRAIN VALVE and remove the drain hose if
attached.
2. Remove the PLATFORM (if equipped), DRIVE ARMS, KNOBS and LOCKWASHERS.
3. Remove the eight Phillips head screws (see Figure 11) and lift the water bath
assembly from the unit just far enough to allow movement. Do not remove the
water bath assembly entirely from the unit.
Figure 11: Water Bath Removal
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
31
TERMINAL
BLOCK
SUSPENSION
ARM
4. Slide the water bath assembly to the front of the unit and tilt the assembly to gain
access to the heater wires. Label or make a note of the location of each wire, then
detach them from the terminal block.
5. Lift and remove the water bath assembly from the unit and set it aside.
Figure 12: Top View without Water Bath Assembly
6. Remove the four Phillips head screws (shown) that hold the SUSPENSION ARM in
place, and remove the SUSPENSION ARM from the unit.
New Brunswick Operating manual
32
SUBPLATFORM
LOWER MOVER
PLATE
ATTACHING
#10-32 X 1/2”
RETAINER
RETAINER
UPPER
FLEXURE
LOWER MOVER
LOCK NUT
(2)
Figure 13: Top View, Lower Mover Plate Removed
HARDWARE
7. Loosen and remove the hardware that attaches the UPPER FLEXURES to LOWER
MOVER PLATE
.
Figure 14: Flexure-Attaching Hardware Detail
(Reverse View)
PLATE
PAN HEAD PHILLIPS
SCREW (2)
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
33
BEARING
PULLEY
DRIVE
PULLEY
BELT
LOWER
PLATE
8. Using your fingers, reach under the SUBPLATFORM and move the belt so that it falls
off the drive pulley. Remove the belt from the bearing housing pulley.
Figure 15: Belt Removal
HOUSING
MOVER
9. Grab the belt from underneath the SUBPLATFORM, pull it forward and over one
corner of the SUBPLATFORM. Repeat for the other corner, until the belt clears the
SUBPLATFORM, but is constrained by the LOWER MOVER PLATE.
10. Slide the belt to one of the unattached sides of the
LOWER MOVER PLATE and pull it
through the opening.
11. Slide the belt to the other side of the LOWER MOVER PLATE, pull it through the
opening, and remove it from the unit.
12. Install the replacement belt in similar fashion.
13. Reattach the UPPER FLEXURES to the LOWER MOVER PLATE.
New Brunswick Operating manual
34
8
8
If any problems occur with your shaker, do not attempt to perform any service on the unit
other than specified in this manual. Unauthorized servicing may void the warranty. Please
contact your local Eppendorf Sales Order Department
In any correspondence with Eppendorf, please refer to the Model Number and Serial Number
of your unit. This information is on the ELECTRICAL SPECIFICATION PLATE, which is
located on the side panel of the unit, near the ON/OFF SWITCH.
T
RROOUUBBLLEESSHHOOOOTTIINNG
T
G
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
35
Part Description
Part Number
V-Belt
R-243
Fuse, Slo Blo 0.5 A, 250 V
P0380-3150
Accessory Description
Part Number
Gable Cover, Plexiglas, for temperatures up to 60°C
M1231-2010
Gable Cover, Stainless Steel, for temperatures over to 60°C
M1231-2000
Cooling Coil Assembly, stainless steel, installed
M1231-9920
Suspension Arm Kit
M1248-0730
Sub-Platform used as mounting base for 2 half-size platforms, or for
4 test tube racks
M1239-9939
Accessory Description
Platforms
per Bath
Tubes per
Platform
Part
Number
50 ml Erlenmeyer clamps on half-size
platform*
2
13
AG7-50
125 ml Erlenmeyer clamps on half-size
platform*
2
8
AG7-125
250 ml Erlenmeyer clamps on half-size
platform*
2
5
AG7-250
9
9
When ordering replacement or accessory parts, or requesting service information, please
provide the Model Number and Serial Number of your shaker. This information is on the
ELECTRICAL SPECIFICATION PLATE, which is located on the side panel of the unit.
9.1 Replacement Parts
9.2 Accessories
R
EEPPLLAACCEEMMEENNTT
R
A
CCCCEESSSSOORRYY
A
I
NNFFOORRMMAATTIIOON
I
P
AARRTTSS
P
&
&
N
9.2.1 Half-Size Platforms
* Requires Sub-Platform M1239-9939
New Brunswick Operating manual
36
Accessory Description
Per Bath
Per Rack
Part Number
Test Tube Rack for 13 mm test tubes*
4
60
AG7-TT13
Test Tube Rack for 16 mm test tubes*
4
36
AG7-TT16
Test Tube Rack for 20 mm test tubes*
4
29
AG7-TT20
Test Tube Rack for 25 mm test tubes *
4
18
AG7-TT25
Accessory Description
Capacity
Part Number
50 ml Erlenmeyer Flasks
31
M1231-9933
125 ml Erlenmeyer Flasks
22
M1231-9934
250 ml Erlenmeyer Flasks
13
M1231-9935
500 ml Erlenmeyer Flasks
8
M1231-9936
1 L Erlenmeyer Flasks
6
M1231-9937
2 L Erlenmeyer Flasks
2
M1231-9938
Flask Clamp
Capacity
Part Number
10 ml Erlenmeyer Flasks
82 ea.
ACE-10S
25 ml Erlenmeyer Flasks
16 ea.
M1190-9004
50 ml Erlenmeyer Flasks
14 ea.
M1190-9000
125 ml Erlenmeyer Flasks
8 ea.
M1190-9001
250 L Erlenmeyer Flasks
6 ea.
M1190-9002
500 L Erlenmeyer Flasks
6 ea.
M1190-9003
1 L Erlenmeyer Flasks
4 ea.
ACE-1000S
2 L Erlenmeyer Flasks
4 ea.
ACE-2000S
9.2.2 Test Tube Racks
* Requires Sub-Platform M1239-9939
9.2.3 Dedicated Platforms
9.2.4 Universal Platform Clamps
The following is a list of flask clamps and capacities for the Universal Platform
(M1231-9930). Clamps are not included with the platform.
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
37
0
110
Figure 16: Control Schematic, 100-130 VAC 50/60 Hz
D
RRAAW
D
WIINNGGSS
New Brunswick Operating manual
38
Figure 17: Control Schematic, 200-240 VAC 50/60 Hz
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
39
A
Accessory Descriptions and Part Numbers · 36
Alarm Functions · 26
B
Baffles · 16
Installation · 16
Belt
Replacement · 32, 33
Replacement · 30
C
Clamp Hardware · 22
Cleaning Surfaces · 28
Continuous Run · 24
Cooling Coil · 12, 17
Connecting · 12
D
Double Girdle Clamps · 21
Drain Valve · 30
Connecting · 11
Drive Arms · 19, 20, 21, 30
Installation · 19
Knobs · 19, 20, 21
Lockwashers · 19, 21
E
1
111
I
NNDDEEX
I
I
Inspection
Of Boxes · 9
Installing Flask Clamps · 21
L
LED Display · 14, 15
Lockwashers · 19, 21
Lower Mover Plate · 32, 33
O
Operation · 24
Overview · 6
P
Platform · 19, 20, 21, 30
Assemblies · 16
Installation · 19, 20, 21
Screws · 19, 20, 21
Power Failure · 27
Preventive Maintenance · 28
R
Rear Panel · 13, 18, 28, 29
Removal · 11
Replacement Parts Descriptions and Part Numbers · 35
Rust Prevention · 28
X
Electrical Connect ions · 18
Environment · 10
Equipment
Inspection Of · 9
Unpacking Of · 9
F
Flask Clamps
Installation of · 21
Function Indicators · 15
Fuse Replacement · 28, 29
G
Gable Cover · 17
New Brunswick Operating manual
S
Specifications · 7
Starting the Unit · 24
Status Indicators · 15
Subplatform · 33
Suspension Arm · 19
Removal · 31
T
Temperature Setpoint · 26
Timed Functions · 25
Total Running Time · 27
Troubleshooting · 34
40
U
Unlimited Run · 24
Upper Flexures · 32, 33
User Interface Keys · 14
W
Water Bath
Removal · 30
M1248-0051 C-76 Classic Water Bath Shaker Operating manual
41
New Brunswick Operating manual
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Eppendorf AG · Hamburg · Germany · Tel: +49 40 538 01-0
Application Support E-mail: support@eppendorf.com
Eppendorf North America, Inc. · USA · Tel: +1 516 334 7500
Toll free phone: +1 800 645 3050 menu option 2
E-mail: techserv@eppendorf.com
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